Quote:
Originally Posted by OldDutch
On back flow valve, the neighbors got 8 feet and I only got 4. I have no back flow but they did, and their house is under a year old. Maybe it wasn't installed correctly? Not sure.
My question, if a back flow can get overwhelmed, and all that sewer backup in Sunnyside I think will do it, is there another way?
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The best picture I can find online is this one:
As you can see the waste water going out keeps the valve open, and then if you try to reverse the flow the flap gets pushed back and closes the system. At that point all I could see increased pressure doing is pushing hard to keep it shut.
Is it possible your neighbours had overland flooding? That was the one thing I was thinking of when we were talking about these vavles before; if you have one installed and you flood; does that not prove to your insurance company that it was
not sewer backup? Meaning you'd be out of luck on a claim?